$ git clone -n https://src.fedoraproject.org/rpms/retrace-server.git /var/lib/mock/f39-build-1597451-38448/root/chroot_tmpdir/scmroot/retrace-server
Cloning into '/var/lib/mock/f39-build-1597451-38448/root/chroot_tmpdir/scmroot/retrace-server'...
$ git fetch origin 0fafa5d4e2799cab4624e09fbaab1e1dda9c4bc5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/retrace-server
 * [new ref]         0fafa5d4e2799cab4624e09fbaab1e1dda9c4bc5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fafa5d Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild